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...Forced convection heat transfer is the mechanism of through a fluid in presence bulk motion classified as natural or free and depending on how initiated any caused by means such buoyancy effect i e rise warmer fall cooler whereas to flow over surface tube external pump fan complicated since it involves well conduction enhances higher velocity rate expressed newton s law cooling q ht t w m conv hat convective coefficient h strongly depends properties roughness solid type laminar turbulent v zero at cond hot fig assumed that wall this assumption called no slip condition result from layer adjacent pure motionless thus bahrami ensc f k y general varies along direction mean average for determined properly averaging local entire boundary consider flat plate temperature approaching uniform u can be considered layers top each others assuming noslip slows down particles neighboring friction between two felt up some distance beyond which remains unchanged region where viscous effects changes are...